基于DS1302的DSC8051F500的时钟程序

#include "compiler_defs.h"
#include "C8051F500_defs.h"            // SFR declarations 

//*****************************************//实时时钟全局常量定义
#define WRITE_SECOND    0x80
#define WRITE_MINUTE    0x82
#define WRITE_HOUR      0x84
#define WRITE_DATE      0x86
#define WRITE_DAY       0x8A
#define WRITE_MONTH     0x88
#define WRITE_YEAR      0x8C
#define READ_SECOND     0x81
#define READ_MINUTE     0x83
#define READ_HOUR       0x85
#define READ_DATE       0x87
#define READ_DAY        0x8B
#define READ_MONTH      0x89
#define READ_YEAR       0x8D
#define WRITE_PROTECT   0x8E

#define uchar unsigned char

sbit ACC7 = ACC^7;
sbit ACC0 = ACC^0;
static unsigned char day = 0;
static unsigned char month = 0;
static unsigned char second = 0;
static unsigned char minute = 0;
static unsigned char hour = 0;

static unsigned char y = 0;

//*****************************************//实时时钟函数声明
void DS1302writeByte(unsigned char data1);
uchar DS1302readByte(void);
void Write1302(uchar ucAddr,uchar ucDa);
uchar Read1302(uchar ucAddr);

void Initial(void);
void OSCILLATOR_Init (void);
void PORT_Init (void);
void delay(unsigned int m);
//*****************************************//实时时钟位定义
SBIT (SCLK, SFR_P3, 7);                // DS1302串行时钟信号
SBIT (DIO, SFR_P3, 6);                 // 双向串行数据
SBIT (RST, SFR_P3, 5);                 // DS1302使能端，传输数据时必须为高

void main()
{     
     SFRPAGE = ACTIVE_PAGE;              // Set for PCA0MD
     PCA0MD &= ~0x40;                    // Disable Watchdog Timer
     OSCILLATOR_Init();
     PORT_Init();
     Initial();
     while(1)
     {
        day=  Read1302(READ_DAY);
month=  Read1302(READ_MONTH);
second = Read1302(READ_SECOND);
        minute = Read1302(READ_MINUTE);